Improvement in automatic fans



Patented Nov. n, 1'873.,

UNITED STATES PATENT OFFICE.

WILLIAM B. CAMPBELL, OF SELMA, ALABAMA.

:MPRovEMENT IN AuToMATic FANS.

Specification forming part of Letters Patent No. 144,505, dated Novcmber 11, 1873; application filed October 7, 1873.

'occupants and driving o winged insects. My j improvement consists, rst, in suspending the fan-blades from sockets or sleeves provided with a rubber bushing, which, while firmly holding the fan-blade in any position, permits its ready vertical adjustment; secondly, in a certain manner of hanging the frame carrying the fans, which allows its being folded up against the ceiling when not in use, though it is ordinarily held rigidly against lateral motion.

In the annexed drawings, Figure 1 illustrates my improvements in perspective. Fig. 2 is a view in detail, showing the manner of connecting the fan-frame to the ceiling. Fig. 3 shows the means for suspending the fanblades.

The same letters of reference are used in all the figures in thc designation of identical parts.

The drawing shows two fan-blades, A, which are separately suspended, by their stems al, from a horizontal shaft, B, to which an oscil, lating motion is imparted by a water-wheel, C, through a crank, C', pitman D, and a crossbar, B', fixed on the shaft. The `water-wheel is mounted in a tight case, and is supplied from the service-pipe of the house through a branch, c, the water being discharged through the pipe c. The are of oscillation of the shaft B is regulated by adjusting the wrist-pin d in the slot of the crossbar B. Two cranks and pitmen, connected to opposite ends ofthe crossbar, may be used, if preferred. The stems of the fan-blades pass through fixed sleeves b on i the shaft B, and are encircled by a rubber bushing, b', therein, which so rmly binds on the stem as to hold the blade suspended by its grasp alone. The blades can be readily adjusted vertically by sliding the stems up or down. The shaft B turns in bearings on the vertical bars E of the hanger-frame E, which is suspended from short links F, located Within sockets G, and connected to the plate G thereof by spiral springsH. The links F enter between the jaws ofthe slitted upper ends of the 'bars E', and are pivoted thereto by a pin, e. The extreme ends of the bars E fit the sockets Gr, and have shoulders e', which arrest their Ainward movement. The sockets are, by their plate G', iirmly secured to the ceiling.

To fold the hanger-frame, pull it down iirst until its bars E are drawn entirely out ,of the sockets G, when it can be swung on the pivots or joints e by means of a cord reeving over a 2. The combination of the hanger-frame,

sockets G, links F, and springs H, substantially as and for the purpose specified.

In testimony whereof I have signed myname to this speciiication in the presence-of two subscribing witnesses.

WM. B. CAMPBELL. Witnesses:

D. P. HoLLowAY, A. RUPPERT. 

